Educommunication has favored a re-signification of the epistemological and methodological bases of the media's place in the school context, as well as an axiological discussion of the teacher's role in this new multimedia historical context. To highlight the contributions of Educommunication in the formation of critical subjects, the article raises a dialogue between two fundamental aspects to the understanding of Educommunication: -Freire and Bakhtin (and their Circle). The methodology is characterized by a theoretical investigation, qualitative nature and an epistemological approach of an interpretive nature, which seeks approximations between theories and presents positions on two key issues: the notion of subject and the ideological word. In the discussions, it was seen that the theoretical assumptions allow an approach that considers the dimensions of the use of language in media contexts with a view to a liberating pedagogy. As a conclusion, we point to the idea that subjects are constituted dialogically in/by language, as it favors a critical and emancipatory education.